CA1089083A - Acoustic surface wave devices - Google Patents

Acoustic surface wave devices

Info

Publication number
CA1089083A
CA1089083A CA258,899A CA258899A CA1089083A CA 1089083 A CA1089083 A CA 1089083A CA 258899 A CA258899 A CA 258899A CA 1089083 A CA1089083 A CA 1089083A
Authority
CA
Canada
Prior art keywords
transducer
electrodes
acoustic surface
surface wave
envelope
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA258,899A
Other languages
English (en)
French (fr)
Inventor
Frederick W. Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA1089083A publication Critical patent/CA1089083A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6489—Compensation of undesirable effects
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02858—Means for compensation or elimination of undesirable effects of wave front distortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14517—Means for weighting
    • H03H9/1452—Means for weighting by finger overlap length, apodisation

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
CA258,899A 1975-08-18 1976-08-11 Acoustic surface wave devices Expired CA1089083A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3423475A GB1512686A (en) 1975-08-18 1975-08-18 Acoustic surface wave devices
GB34234/75 1975-08-18

Publications (1)

Publication Number Publication Date
CA1089083A true CA1089083A (en) 1980-11-04

Family

ID=10363100

Family Applications (1)

Application Number Title Priority Date Filing Date
CA258,899A Expired CA1089083A (en) 1975-08-18 1976-08-11 Acoustic surface wave devices

Country Status (5)

Country Link
JP (1) JPS5224444A (cs)
CA (1) CA1089083A (cs)
DE (1) DE2635192C2 (cs)
FR (1) FR2321802A1 (cs)
GB (1) GB1512686A (cs)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1585087A (en) * 1976-07-29 1981-02-25 Plessey Co Ltd Surface acoustic wave filters
NL7810674A (nl) * 1977-12-21 1979-06-25 Tektronix Inc Akoestische oppervlakgolfinrichting.
US4205285A (en) * 1978-11-03 1980-05-27 Gte Laboratories Incorporated Acoustic surface wave device
JPS55125713A (en) 1979-03-22 1980-09-27 Toshiba Corp Surface elastic wave device
JPS5654114A (en) * 1979-10-11 1981-05-14 Nec Corp Reed screen shape converter of elastic surface wave
CN114611533B (zh) * 2022-01-28 2022-12-06 金陵科技学院 叉指单侧倾斜加权型声表面波式Morlet小波处理器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1360235A (en) * 1971-04-17 1974-07-17 Marconi Co Ltd Acoustic surface wave devices
GB1430725A (en) * 1974-08-02 1976-04-07 Mullard Ltd Acoustic surface wave devices
GB1499330A (en) * 1974-09-26 1978-02-01 Plessey Co Ltd Acoustic surface wave filters

Also Published As

Publication number Publication date
GB1512686A (en) 1978-06-01
DE2635192A1 (de) 1977-03-03
FR2321802A1 (fr) 1977-03-18
JPS5753003B2 (cs) 1982-11-10
JPS5224444A (en) 1977-02-23
DE2635192C2 (de) 1985-08-08
FR2321802B1 (cs) 1982-03-12

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Legal Events

Date Code Title Description
MKEX Expiry